Syntheses, crystal structures and photoluminescence of two new pyrazinecarboxylate-based cadmium(II) coordination polymers

Diaquabis(2-oxo-2H-chromene-3-carboxylato-κ2O2,O3)cadmium

“…For background to topological networks, see: Lin et al (2010). For applications of self-assembling systems with organic ligands containing O donors, see: Bischof et al (2010); Chen et al (2008); Ghoshal et al (2007); Li & Zhou (2009). For related structures, see: Georgieva et al (2007); .…”

“…In the past decades, much attention has been paid to the design and synthesis of self-assembling metal complex systems with organic ligands containing O donors due to their fascinating structural diversity (Lin et al, 2010) and potential applications in the areas of catalysis (Bischof et al, 2010), magnetism (Ghoshal et al, 2007), gas adsorption (Li & Zhou, 2009), and luminescence (Chen et al, 2008). Coumarin-3-carboxylic acid is such a ligand and complexes containing it have been reported (Georgieva et al, 2007).…”

Synthesis, crystal structure, and properties of a three-dimensional coordination polymer [Cd(PMP)2] n

“…Owing to interest in applications such as biological imaging, photochemical catalysis, light-driven fuel production, highly efficient luminescent devices, and luminescent chemosensors, the luminescent complexes have recently attracted much attention [13,14]. Many researches on cadmium complexes [7,[15][16][17][18][19][20] showed that Cd(II) complexes may be severed as luminescent materials, because Cd(II) has d 10 electronic configuration and large radius, can adopt various geometries and coordination numbers, and enhance/develop luminescence intensity upon coordination with conjugated p systems containing aromatic rings [4][5][6]21]. On the other hand, the derivatives of pyrazolone and their metal complexes have been widely studied [22][23][24][25][26][27][28] for their biological and pharmacological activities and potential applications [29,30].…”

Linkage isomerism for 4-methylimidazole and a new coordination mode of pyrazine-2,3-dicarboxylate ligand in {[Cd(pzdc)(4-mim)(5-mim)2]·½H2O}n coordination polymer

“…Various possible coordination modes for the H 2 pzdc anions were illustrated in Scheme 1. [53][54][55][56][57][58][59][60][61][62][63][64][65][66][67][68][69]] H 2 pzdc anions show bidentate [30][31][32][33][34], bis(bidentate) bridge (μ 2 ) [13][14][15][16], tridentate bridge (μ 2 ) [17][18][19][20][21][22], tetradentate bridge μ 2 - [24], μ 3 - [23] and μ 4 - [18] and bis(monodentate) bridge (μ 2 ) [17] coordination types. According to our literature survey, the pzdc ligand is mainly coordinated via the carboxylate oxygen, nitrogen atom and O atom of a neighboring carboxyl group, acting as a tridentate bridge [18][19][20][21][22].…”